Slime separation method and equipment

Abstract

The invention relates to a slime separation method and equipment. The slime separation method adopts a one-piece double-flotation-column to carry out circulating flotation and classification for slime, and a flow stabilizer is arranged in a first flotation column; the flow stabilizer can eliminate large vortex, support a foam layer and increase the probability of collision between particles and bubbles, so that the slime easy to float can be floated out as soon as possible so as so reduce mix and pollution and play the role of flow stabilization; the material floated out through sedimentation is classified by a first sedimentation box and then enters a second floatation column to be floated again, and then enters a second sedimentation box to be classified again; and the number of the circulating separation of pulp is increased, and the recovery capabilities of coarse-fraction slime and difficultly floated fine-fraction slime are improved. The equipment has compact structure, large treating capacity, low production operation cost, and convenient installation and operation, improves the number and quality of fine coal products on the whole, and has marketable economic benefits.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to a high-efficiency separation method and equipment for coal slime. Background technique [0002] At present, the key technology and equipment of high-efficiency separation of coal slime flotation based on high-efficiency purification and processing are still in the research stage in China. Although the slime separation technology is constantly improving and new equipment is emerging, there is still a big gap between its separation effect and efficient separation. Existing technologies (such as gravity separation, centrifugal separation and foam separation, etc.) are far from being able to achieve efficient separation of coal slime in my country, especially the separation of high-ash and difficult-to-separate coal slime. As the leading sorting equipment of coal slime flotation, flotation machine and flotation column, more and more problems are exposed in the process of c...

AI Technical Summary

Problems solved by technology

The common problems reflected in industrial experiments are: low ash content in tailings, low separation efficiency, especially poor recovery of coarse particles, which cannot meet the needs of fine-grained coal separation in my country

However, from the perspective of the overall use effect, the processing capacity of the equipment is low, the recovery effect of coarse particles is poor, and the low ash content of flotation tailings has become a prominent problem it faces.

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